How Many cM is a Half First Cousin Once Removed? Let's Find Out!
So, you're diving into the world of genealogy and DNA testing, and you’ve come across the term "half first cousin once removed." But, how much genetic material do you actually share with a person who fits that description? You might be wondering: How many centimorgans (cM) are involved in this relationship? Well, buckle up because we’re going to get into the nitty-gritty of it!
What is a Half First Cousin Once Removed?
Before we start calculating cM, let’s make sure we’re clear on what a half first cousin once removed actually is. It’s not the easiest term to break down, right?
A Quick Breakdown of the Family Tree
A first cousin once removed is simply the child of your first cousin (or conversely, the parent of your cousin). But when you add "half" into the mix, it gets a bit trickier. A half first cousin shares one grandparent with you, not both. So, in the case of a "half first cousin once removed," this person is either a child or parent of your half first cousin. Got it? Good!
Now, let's dive into the cM details.
The Genetic Connection: How Many cM Do You Share?
When it comes to shared DNA, the number of cM is key. The higher the cM, the closer the relationship. For a half first cousin once removed, this number can vary, but there are averages we can rely on.
The Average cM for a Half First Cousin Once Removed
On average, a half first cousin once removed shares about 450 to 700 cM. But here’s the thing: it can definitely vary. DNA is tricky like that. If you take a test, you might find that your half first cousin once removed has slightly higher or lower cM, depending on how much DNA you actually inherited from shared ancestors.
But let's not get lost in the weeds here—this number is just a guideline.
Factors That Influence cM
So, why does it vary so much? Well, genetic inheritance isn't as straightforward as we’d like. A bunch of different factors play into it, like how many generations you’ve diverged from the common ancestor or the random nature of genetic inheritance.
Why cM Can Fluctuate
Each person inherits a random half of their parent's DNA, so the shared cM can fluctuate. It's not like every half first cousin once removed is going to match exactly in terms of cM. It’s kind of like pulling from a genetic lottery every time. I remember my own experience with DNA testing: my second cousin and I shared a significantly lower amount of cM than I expected—turns out, we didn’t inherit as much DNA from the same ancestors as I thought!
Real-Life Example: My DNA Test Story
I recently talked to a friend, Rachel, who was going crazy over her DNA test results. She was trying to figure out how much DNA she shared with a "half first cousin once removed" on her father's side. At first, the numbers were all over the place—one test showed 450 cM, and another was closer to 600 cM. She was totally confused. But, after a little digging, we found out that these fluctuations were pretty normal! The amount of cM could depend on which of her father’s relatives she was related to (half cousins once removed could share DNA differently depending on which grandparent they share). The moral of the story? Don’t freak out over slight variations in cM!
Understanding cM for Your Own Family Tree
Now that you know the average and why the numbers might vary, let’s think about how you can use this info. If you're building your family tree and trying to connect with distant relatives, the cM number is a pretty solid starting point. But don’t treat it as an exact science—family dynamics and DNA can be wild cards.
How to Use This Information
If you’re like me, you probably want to dive deeper into your ancestry. Use these cM ranges to help you connect the dots. If you're looking at DNA matches and wondering whether someone could be a half first cousin once removed, check the cM range first. Then, consider the family history. Did they come from a shared grandparent but through a different parent? That’s your answer!
Conclusion: The cM Range is Just a Guide, Not a Rule
So, how many cM is a half first cousin once removed? On average, it's about 450 to 700 cM, but keep in mind that this number can fluctuate. Genetic inheritance is a bit unpredictable, and a variety of factors come into play. But don't get too stressed about the numbers! As long as you understand the basic concept, you can use this info as a tool in your genealogical journey.
Just remember, it's not always about the number—it’s about connecting with those distant relatives and discovering the stories that come with them!
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Is 172 cm good for a man?
Yes it is. Average height of male in India is 166.3 cm (i.e. 5 ft 5.5 inches) while for female it is 152.6 cm (i.e. 5 ft) approximately. So, as far as your question is concerned, aforesaid height is above average in both cases.
Is 165 cm normal for a 15 year old?
The predicted height for a female, based on your parents heights, is 155 to 165cm. Most 15 year old girls are nearly done growing. I was too. It's a very normal height for a girl.
Is 160 cm too tall for a 12 year old?
How Tall Should a 12 Year Old Be? We can only speak to national average heights here in North America, whereby, a 12 year old girl would be between 137 cm to 162 cm tall (4-1/2 to 5-1/3 feet). A 12 year old boy should be between 137 cm to 160 cm tall (4-1/2 to 5-1/4 feet).
How tall is a average 15 year old?
Average Height to Weight for Teenage Boys - 13 to 20 Years
| Male Teens: 13 - 20 Years) | ||
|---|---|---|
| 14 Years | 112.0 lb. (50.8 kg) | 64.5" (163.8 cm) |
| 15 Years | 123.5 lb. (56.02 kg) | 67.0" (170.1 cm) |
| 16 Years | 134.0 lb. (60.78 kg) | 68.3" (173.4 cm) |
| 17 Years | 142.0 lb. (64.41 kg) | 69.0" (175.2 cm) |
How to get taller at 18?
Staying physically active is even more essential from childhood to grow and improve overall health. But taking it up even in adulthood can help you add a few inches to your height. Strength-building exercises, yoga, jumping rope, and biking all can help to increase your flexibility and grow a few inches taller.
Is 5.7 a good height for a 15 year old boy?
Generally speaking, the average height for 15 year olds girls is 62.9 inches (or 159.7 cm). On the other hand, teen boys at the age of 15 have a much higher average height, which is 67.0 inches (or 170.1 cm).
Can you grow between 16 and 18?
Most girls stop growing taller by age 14 or 15. However, after their early teenage growth spurt, boys continue gaining height at a gradual pace until around 18. Note that some kids will stop growing earlier and others may keep growing a year or two more.
Can you grow 1 cm after 17?
Even with a healthy diet, most people's height won't increase after age 18 to 20. The graph below shows the rate of growth from birth to age 20. As you can see, the growth lines fall to zero between ages 18 and 20 ( 7 , 8 ). The reason why your height stops increasing is your bones, specifically your growth plates.